Delia is a distinctive girls' name in United States, ranking #946 in 2003 with 248 recorded births. The name reached its all-time peak in 2007 with 272 births ranking #986. Since 1996, the popularity has increased by 32.6%. In 2003, approximately 1 in every 7,367 girls born was named Delia. FALLING Recent data shows the name is currently falling.